1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
|
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -global-isel -mtriple=amdgcn-amd-mesa3d -mcpu=gfx1010 -verify-machineinstrs < %s | FileCheck -check-prefix=GFX10 %s
define float @test_min_max_ValK0_K1_f32(float %a) #0 {
; GFX10-LABEL: test_min_max_ValK0_K1_f32:
; GFX10: ; %bb.0:
; GFX10-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10-NEXT: v_mul_f32_e64 v0, v0, 2.0 clamp
; GFX10-NEXT: s_setpc_b64 s[30:31]
%fmul = fmul float %a, 2.0
%maxnum = call nnan float @llvm.maxnum.f32(float %fmul, float 0.0)
%fmed = call nnan float @llvm.minnum.f32(float %maxnum, float 1.0)
ret float %fmed
}
define double @test_min_max_K0Val_K1_f64(double %a) #1 {
; GFX10-LABEL: test_min_max_K0Val_K1_f64:
; GFX10: ; %bb.0:
; GFX10-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10-NEXT: v_mul_f64 v[0:1], v[0:1], 2.0 clamp
; GFX10-NEXT: s_setpc_b64 s[30:31]
%fmul = fmul double %a, 2.0
%maxnum = call nnan double @llvm.maxnum.f64(double 0.0, double %fmul)
%fmed = call nnan double @llvm.minnum.f64(double %maxnum, double 1.0)
ret double %fmed
}
; min-max patterns for ieee=true, dx10_clamp=true don't have to check for NaNs
define half @test_min_K1max_ValK0_f16(half %a) #2 {
; GFX10-LABEL: test_min_K1max_ValK0_f16:
; GFX10: ; %bb.0:
; GFX10-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10-NEXT: v_mul_f16_e64 v0, v0, 2.0 clamp
; GFX10-NEXT: s_setpc_b64 s[30:31]
%fmul = fmul half %a, 2.0
%maxnum = call half @llvm.maxnum.f16(half %fmul, half 0.0)
%fmed = call half @llvm.minnum.f16(half 1.0, half %maxnum)
ret half %fmed
}
define <2 x half> @test_min_K1max_K0Val_f16(<2 x half> %a) #1 {
; GFX10-LABEL: test_min_K1max_K0Val_f16:
; GFX10: ; %bb.0:
; GFX10-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10-NEXT: v_pk_mul_f16 v0, v0, 2.0 op_sel_hi:[1,0] clamp
; GFX10-NEXT: s_setpc_b64 s[30:31]
%fmul = fmul <2 x half> %a, <half 2.0, half 2.0>
%maxnum = call nnan <2 x half> @llvm.maxnum.v2f16(<2 x half> <half 0.0, half 0.0>, <2 x half> %fmul)
%fmed = call nnan <2 x half> @llvm.minnum.v2f16(<2 x half> <half 1.0, half 1.0>, <2 x half> %maxnum)
ret <2 x half> %fmed
}
define <2 x half> @test_min_max_splat_padded_with_undef(<2 x half> %a) #2 {
; GFX10-LABEL: test_min_max_splat_padded_with_undef:
; GFX10: ; %bb.0:
; GFX10-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10-NEXT: v_pk_mul_f16 v0, v0, 2.0 op_sel_hi:[1,0] clamp
; GFX10-NEXT: s_setpc_b64 s[30:31]
%fmul = fmul <2 x half> %a, <half 2.0, half 2.0>
%maxnum = call <2 x half> @llvm.maxnum.v2f16(<2 x half> <half 0.0, half undef>, <2 x half> %fmul)
%fmed = call <2 x half> @llvm.minnum.v2f16(<2 x half> <half 1.0, half undef>, <2 x half> %maxnum)
ret <2 x half> %fmed
}
; max-mix patterns work only for known non-NaN inputs
define float @test_max_min_ValK1_K0_f32(float %a) #0 {
; GFX10-LABEL: test_max_min_ValK1_K0_f32:
; GFX10: ; %bb.0:
; GFX10-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10-NEXT: v_mul_f32_e64 v0, v0, 2.0 clamp
; GFX10-NEXT: s_setpc_b64 s[30:31]
%fmul = fmul float %a, 2.0
%minnum = call nnan float @llvm.minnum.f32(float %fmul, float 1.0)
%fmed = call nnan float @llvm.maxnum.f32(float %minnum, float 0.0)
ret float %fmed
}
define double @test_max_min_K1Val_K0_f64(double %a) #1 {
; GFX10-LABEL: test_max_min_K1Val_K0_f64:
; GFX10: ; %bb.0:
; GFX10-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10-NEXT: v_mul_f64 v[0:1], v[0:1], 2.0 clamp
; GFX10-NEXT: s_setpc_b64 s[30:31]
%fmul = fmul double %a, 2.0
%minnum = call nnan double @llvm.minnum.f64(double 1.0, double %fmul)
%fmed = call nnan double @llvm.maxnum.f64(double %minnum, double 0.0)
ret double %fmed
}
define half @test_max_K0min_ValK1_f16(half %a) #0 {
; GFX10-LABEL: test_max_K0min_ValK1_f16:
; GFX10: ; %bb.0:
; GFX10-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10-NEXT: v_mul_f16_e64 v0, v0, 2.0 clamp
; GFX10-NEXT: s_setpc_b64 s[30:31]
%fmul = fmul half %a, 2.0
%minnum = call nnan half @llvm.minnum.f16(half %fmul, half 1.0)
%fmed = call nnan half @llvm.maxnum.f16(half 0.0, half %minnum)
ret half %fmed
}
; treat undef as value that will result in a constant splat
define <2 x half> @test_max_K0min_K1Val_v2f16(<2 x half> %a) #1 {
; GFX10-LABEL: test_max_K0min_K1Val_v2f16:
; GFX10: ; %bb.0:
; GFX10-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10-NEXT: v_pk_mul_f16 v0, v0, 2.0 op_sel_hi:[1,0] clamp
; GFX10-NEXT: s_setpc_b64 s[30:31]
%fmul = fmul <2 x half> %a, <half 2.0, half 2.0>
%minnum = call nnan <2 x half> @llvm.minnum.v2f16(<2 x half> <half 1.0, half undef>, <2 x half> %fmul)
%fmed = call nnan <2 x half> @llvm.maxnum.v2f16(<2 x half> <half undef, half 0.0>, <2 x half> %minnum)
ret <2 x half> %fmed
}
; global nnan function attribute always forces clamp combine
define float @test_min_max_global_nnan(float %a) #3 {
; GFX10-LABEL: test_min_max_global_nnan:
; GFX10: ; %bb.0:
; GFX10-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10-NEXT: v_max_f32_e64 v0, v0, v0 clamp
; GFX10-NEXT: s_setpc_b64 s[30:31]
%maxnum = call float @llvm.maxnum.f32(float %a, float 0.0)
%fmed = call float @llvm.minnum.f32(float %maxnum, float 1.0)
ret float %fmed
}
define float @test_max_min_global_nnan(float %a) #3 {
; GFX10-LABEL: test_max_min_global_nnan:
; GFX10: ; %bb.0:
; GFX10-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10-NEXT: v_max_f32_e64 v0, v0, v0 clamp
; GFX10-NEXT: s_setpc_b64 s[30:31]
%minnum = call float @llvm.minnum.f32(float %a, float 1.0)
%fmed = call float @llvm.maxnum.f32(float %minnum, float 0.0)
ret float %fmed
}
; ------------------------------------------------------------------------------
; Negative patterns
; ------------------------------------------------------------------------------
; min(max(Val, 1.0), 0.0), should be min(max(Val, 0.0), 1.0)
define float @test_min_max_K0_gt_K1(float %a) #0 {
; GFX10-LABEL: test_min_max_K0_gt_K1:
; GFX10: ; %bb.0:
; GFX10-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10-NEXT: v_max_f32_e32 v0, 1.0, v0
; GFX10-NEXT: v_min_f32_e32 v0, 0, v0
; GFX10-NEXT: s_setpc_b64 s[30:31]
%maxnum = call nnan float @llvm.maxnum.f32(float %a, float 1.0)
%fmed = call nnan float @llvm.minnum.f32(float %maxnum, float 0.0)
ret float %fmed
}
; max(min(Val, 0.0), 1.0), should be max(min(Val, 1.0), 0.0)
define float @test_max_min_K0_gt_K1(float %a) #0 {
; GFX10-LABEL: test_max_min_K0_gt_K1:
; GFX10: ; %bb.0:
; GFX10-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10-NEXT: v_min_f32_e32 v0, 0, v0
; GFX10-NEXT: v_max_f32_e32 v0, 1.0, v0
; GFX10-NEXT: s_setpc_b64 s[30:31]
%minnum = call nnan float @llvm.minnum.f32(float %a, float 0.0)
%fmed = call nnan float @llvm.maxnum.f32(float %minnum, float 1.0)
ret float %fmed
}
; Input that can be NaN
; min-max patterns for ieee=false require known non-NaN input
define float @test_min_max_maybe_NaN_input_ieee_false(float %a) #1 {
; GFX10-LABEL: test_min_max_maybe_NaN_input_ieee_false:
; GFX10: ; %bb.0:
; GFX10-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10-NEXT: v_mul_f32_e32 v0, 2.0, v0
; GFX10-NEXT: v_max_f32_e32 v0, 0, v0
; GFX10-NEXT: v_min_f32_e32 v0, 1.0, v0
; GFX10-NEXT: s_setpc_b64 s[30:31]
%fmul = fmul float %a, 2.0
%maxnum = call float @llvm.maxnum.f32(float %fmul, float 0.0)
%fmed = call float @llvm.minnum.f32(float %maxnum, float 1.0)
ret float %fmed
}
; clamp fails here since input can be NaN and dx10_clamp=false; fmed3 succeds
define float @test_min_max_maybe_NaN_input_ieee_true_dx10clamp_false(float %a) #4 {
; GFX10-LABEL: test_min_max_maybe_NaN_input_ieee_true_dx10clamp_false:
; GFX10: ; %bb.0:
; GFX10-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10-NEXT: v_mul_f32_e32 v0, 2.0, v0
; GFX10-NEXT: v_med3_f32 v0, v0, 0, 1.0
; GFX10-NEXT: s_setpc_b64 s[30:31]
%fmul = fmul float %a, 2.0
%maxnum = call float @llvm.maxnum.f32(float %fmul, float 0.0)
%fmed = call float @llvm.minnum.f32(float %maxnum, float 1.0)
ret float %fmed
}
; max-min patterns always require known non-NaN input
define float @test_max_min_maybe_NaN_input_ieee_true(float %a) #0 {
; GFX10-LABEL: test_max_min_maybe_NaN_input_ieee_true:
; GFX10: ; %bb.0:
; GFX10-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10-NEXT: v_mul_f32_e32 v0, 2.0, v0
; GFX10-NEXT: v_min_f32_e32 v0, 1.0, v0
; GFX10-NEXT: v_max_f32_e32 v0, 0, v0
; GFX10-NEXT: s_setpc_b64 s[30:31]
%fmul = fmul float %a, 2.0
%minnum = call float @llvm.minnum.f32(float %fmul, float 1.0)
%fmed = call float @llvm.maxnum.f32(float %minnum, float 0.0)
ret float %fmed
}
define float @test_max_min_maybe_NaN_input_ieee_false(float %a) #1 {
; GFX10-LABEL: test_max_min_maybe_NaN_input_ieee_false:
; GFX10: ; %bb.0:
; GFX10-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10-NEXT: v_mul_f32_e32 v0, 2.0, v0
; GFX10-NEXT: v_min_f32_e32 v0, 1.0, v0
; GFX10-NEXT: v_max_f32_e32 v0, 0, v0
; GFX10-NEXT: s_setpc_b64 s[30:31]
%fmul = fmul float %a, 2.0
%minnum = call float @llvm.minnum.f32(float %fmul, float 1.0)
%fmed = call float @llvm.maxnum.f32(float %minnum, float 0.0)
ret float %fmed
}
declare half @llvm.minnum.f16(half, half)
declare half @llvm.maxnum.f16(half, half)
declare float @llvm.minnum.f32(float, float)
declare float @llvm.maxnum.f32(float, float)
declare double @llvm.minnum.f64(double, double)
declare double @llvm.maxnum.f64(double, double)
declare <2 x half> @llvm.minnum.v2f16(<2 x half>, <2 x half>)
declare <2 x half> @llvm.maxnum.v2f16(<2 x half>, <2 x half>)
attributes #0 = {"amdgpu-ieee"="true"}
attributes #1 = {"amdgpu-ieee"="false"}
attributes #2 = {"amdgpu-ieee"="true" "amdgpu-dx10-clamp"="true"}
attributes #3 = {"no-nans-fp-math"="true"}
attributes #4 = {"amdgpu-ieee"="true" "amdgpu-dx10-clamp"="false"}
|
